The property is named after Sir Robert Fitz-Neil whose family held the estate until 1386, but the oldest part of the current building dates back to the house probably built by Sir John Iwardeby in the early 16th century. He built a traditional timber-framedhall house and it is the solar wing of this house that survives. Iwardeby's original house was probably similar to the “Bayleaf” farmhouse at the Weald and Downland Open Air Museum. In the early 17th century with the rest of the original house either demolished or otherwise destroyed the remaining solar wing was extended to the west by the addition of a structure with the three distinctive gables. In the late 18th century a large single-storey kitchen area was added to the north elevation including the large chimney. During the 19th century further single-storey extensions were added to the north and a large two-storey extension to the south with a verandah.
20th century
Fitznells continued to function as a farmhouse well into the 20th century; when bought by S. E. Parkes in 1927 from the Gadesden family the estate still included of land, farm buildings and five cottages. In 1930 William Batho purchased the house and its immediate grounds. During the Second World War the house was requisitioned for use as a clothing exchange. The Surrey College of Music occupied the house after the war but this closed in 1956 when the lease was terminated.. In 1959 the house was bought by Anthony Carter and Vivienne Price, who ran the Fitznells School of Musicon the ground floor while living in the floor above. In 1988 the house was bought by Conifercourt Holdings Ltd for use as their head office. The renovation works they undertook transformed the building to its current appearance. The house is currently used as a doctor’s surgery.
Restoration
Renovation works were carried out in 1988 including:
Removal of the render concealing the timber frame of the 17th-century front to the house
Replacement of the Victorian entrance porch
Re-opening of the solar that had been sub-divided since the early 17th century
Erection of a reproduction Victorian-style verandah to the rear elevation
Replacement of a later sash window in the solar with an original-sized window
Additional buildings to the south of the main house were added on the site at this time.